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D-Index & Metrics

Discipline name D-Index World Ranking National Ranking Publications Citations
Plant Science and Agronomy 63 1053 93 198 12779

David A. Walker publications per year

The chart shows the history of publications by David A. Walker between 1956 and 2010, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. David A. Walker published across 55 years, from 1956 to 2010, averaging 3.9 papers a year. Output peaked at 18 publications in 1983. 2 of the 217 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1956 to 2010. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 1983. 1956: 2 publications 1957: 2 publications 1958: 2 publications 1959: 1 publication 1960: 4 publications 1961: 2 publications 1962: 2 publications 1963: 2 publications 1964: 3 publications 1965: 2 publications 1966: 5 publications 1967: 5 publications 1968: 7 publications 1969: 3 publications 1970: 2 publications 1971: 6 publications 1972: 3 publications 1973: 12 publications 1974: 7 publications 1975: 5 publications 1976: 12 publications 1977: 3 publications 1978: 6 publications 1979: 9 publications 1980: 9 publications 1981: 9 publications 1982: 5 publications 1983: 18 publications 1984: 5 publications 1985: 7 publications 1986: 8 publications 1987: 8 publications 1988: 5 publications 1989: 5 publications 1990: 4 publications 1991: 2 publications 1992: 4 publications 1993: 2 publications 1994: 1 publication 1995: 2 publications 1996: 0 publications 1997: 1 publication 1998: 0 publications 1999: 1 publication 2000: 1 publication 2001: 1 publication 2002: 2 publications 2003: 1 publication 2004: 4 publications 2005: 0 publications 2006: 0 publications 2007: 1 publication 2008: 2 publications 2009: 1 publication 2010: 1 publication
1956 2010

217 publications in total across all disciplines

View publications per year as a table
David A. Walker: publications per year, 1956 to 2010
Year Publications
1956 2
1957 2
1958 2
1959 1
1960 4
1961 2
1962 2
1963 2
1964 3
1965 2
1966 5
1967 5
1968 7
1969 3
1970 2
1971 6
1972 3
1973 12
1974 7
1975 5
1976 12
1977 3
1978 6
1979 9
1980 9
1981 9
1982 5
1983 18
1984 5
1985 7
1986 8
1987 8
1988 5
1989 5
1990 4
1991 2
1992 4
1993 2
1994 1
1995 2
1996 0
1997 1
1998 0
1999 1
2000 1
2001 1
2002 2
2003 1
2004 4
2005 0
2006 0
2007 1
2008 2
2009 1
2010 1
Total 217
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David A. Walker publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where David A. Walker sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 88 bars. Horizontal axis: publications, 36–40 to 467+. Vertical axis: number of scientists, 0 to 255. Most scientists, 255, have 111–115 publications. The last bar groups every scientist with 467 publications or more. The highlighted bar, 196–200 publications, is where this scientist sits. 36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36–40 publications 467+

This scientist: 198 publications — 77th percentile

77% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

View publications distribution as a table
Number of Plant Science and Agronomy scientists by publication count, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
Publications Scientists This scientist
36–40 2
41–45 7
46–50 40
51–55 58
56–60 60
61–65 107
66–70 130
71–75 153
76–80 191
81–85 199
86–90 206
91–95 218
96–100 226
101–105 227
106–110 247
111–115 255
116–120 253
121–125 233
126–130 219
131–135 201
136–140 194
141–145 176
146–150 157
151–155 147
156–160 151
161–165 159
166–170 137
171–175 128
176–180 126
181–185 98
186–190 114
191–195 100
196–200 90 198
201–205 71
206–210 98
211–215 70
216–220 86
221–225 61
226–230 58
231–235 53
236–240 64
241–245 39
246–250 46
251–255 51
256–260 36
261–265 44
266–270 35
271–275 30
276–280 33
281–285 35
286–290 36
291–295 26
296–300 26
301–305 31
306–310 30
311–315 21
316–320 29
321–325 14
326–330 15
331–335 15
336–340 17
341–345 15
346–350 12
351–355 17
356–360 18
361–365 12
366–370 11
371–375 6
376–380 6
381–385 11
386–390 9
391–395 10
396–400 8
401–405 4
406–410 9
411–415 11
416–420 4
421–425 7
426–430 4
431–435 3
436–440 5
441–445 8
446–450 6
451–455 7
456–460 5
461–465 6
466 2
467+ 99
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David A. Walker D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where David A. Walker sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 80 bars. Horizontal axis: D-Index, 30 to 109+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 34 D-Index. The last bar groups every scientist with 109 D-Index or more. The highlighted bar, 63 D-Index, is where this scientist sits. 30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 63 D-Index — 84th percentile

84% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

View D-Index distribution as a table
Number of Plant Science and Agronomy scientists by D-index, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
D-Index Scientists This scientist
30 200
31 236
32 253
33 283
34 288
35 240
36 246
37 243
38 247
39 229
40 232
41 230
42 228
43 219
44 193
45 164
46 158
47 143
48 131
49 127
50 122
51 122
52 110
53 102
54 98
55 79
56 85
57 88
58 91
59 62
60 61
61 59
62 54
63 61 63
64 59
65 58
66 41
67 49
68 39
69 32
70 40
71 47
72 38
73 28
74 29
75 28
76 22
77 21
78 25
79 26
80 19
81 16
82 12
83 16
84 14
85 11
86 17
87 13
88 10
89 12
90 18
91 16
92 16
93 17
94 12
95 8
96 9
97 9
98 11
99 12
100 5
101 8
102 4
103 11
104 5
105 9
106 7
107 4
108 8
109+ 99
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Research.com Recognitions

  • 1994 - Fellow of the American Academy of Arts and Sciences
  • 1988 - Fellow of John Simon Guggenheim Memorial Foundation
  • 1984 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

What is he best known for?

The fields of study he is best known for:

  • Enzyme
  • Biochemistry
  • Photosynthesis

David A. Walker mainly investigates Photosynthesis, Biochemistry, Chloroplast, Spinach and Botany. The Chlorophyll fluorescence research he does as part of his general Photosynthesis study is frequently linked to other disciplines of science, such as Oxygen evolution, therefore creating a link between diverse domains of science. His work in the fields of Biochemistry, such as Pyruvate carboxylase, Fruit Flavor and Nicotiana tabacum, overlaps with other areas such as Genetically modified tomato.

David A. Walker has researched Chloroplast in several fields, including Dihydroxyacetone phosphate, Phosphate, Fructose, Ribulose and Protoplast. His Spinach research focuses on Spinacia and how it relates to Superoxide and Reagent. His Botany research is multidisciplinary, incorporating perspectives in Carbon dioxide and Carboxylation.

His most cited work include:

  • CRITERIA OF INTACTNESS AND THE PHOTOSYNTHETIC ACTIVITY OF SPINACH CHLOROPLAST PREPARATIONS (380 citations)
  • Measurement of the ascorbate content of spinach leaf protoplasts and chloroplasts during illumination (344 citations)
  • Role of orthophosphate and other factors in the regulation of starch formation in leaves and isolated chloroplasts. (341 citations)

What are the main themes of his work throughout his whole career to date?

Photosynthesis, Chloroplast, Biochemistry, Spinach and Botany are his primary areas of study. His research integrates issues of Biophysics and Chlorophyll in his study of Photosynthesis. His work deals with themes such as Photochemistry, Carbon assimilation, Electron transport chain and Substrate, which intersect with Chloroplast.

The concepts of his Spinach study are interwoven with issues in Cytoplasm, Stimulation, Spinacia and Sucrose. His work on Plant physiology as part of general Botany research is often related to Hordeum vulgare, thus linking different fields of science. His studies deal with areas such as Analytical chemistry and Chlorophyll a as well as Chlorophyll fluorescence.

He most often published in these fields:

  • Photosynthesis (61.82%)
  • Chloroplast (52.12%)
  • Biochemistry (51.52%)

What were the highlights of his more recent work (between 1990-2009)?

  • Photosynthesis (61.82%)
  • Botany (16.97%)
  • Biochemistry (51.52%)

In recent papers he was focusing on the following fields of study:

David A. Walker focuses on Photosynthesis, Botany, Biochemistry, Ecology and Chloroplast. His Photosynthesis research is multidisciplinary, incorporating elements of Chlorophyll, Engineering physics and Photophosphorylation. His study in the field of Plant physiology and Carbon assimilation is also linked to topics like Castor beans, Isolation and Genealogy.

David A. Walker integrates Biochemistry and Genetically modified tomato in his studies. His research in the fields of Land use overlaps with other disciplines such as Rapid response, Energy and Extension. His research investigates the connection between Chloroplast and topics such as Inorganic phosphate that intersect with problems in Chlorella.

Between 1990 and 2009, his most popular works were:

  • Concerning a Dual Function of Coupled Cyclic Electron Transport in Leaves (265 citations)
  • Identification of a Specific Isoform of Tomato Lipoxygenase (TomloxC) Involved in the Generation of Fatty Acid-Derived Flavor Compounds (254 citations)
  • Biofuels, facts, fantasy, and feasibility (153 citations)

In his most recent research, the most cited papers focused on:

  • Enzyme
  • Metabolism
  • Biochemistry

David A. Walker mainly focuses on Photosynthesis, Ecology, Biochemistry, Energy and Land use. His Photosynthesis study combines topics from a wide range of disciplines, such as Ammonium, Nuclear chemistry, Nitrogen, Cytosol and Phosphate. The study incorporates disciplines such as Excited state and Biochemical engineering in addition to Ecology.

In most of his Biochemistry studies, his work intersects topics such as Hexanal.

Best Publications

  • Measurement of the ascorbate content of spinach leaf protoplasts and chloroplasts during illumination

    Christine Foyer;Jackie Rowell;David Walker

  • Role of orthophosphate and other factors in the regulation of starch formation in leaves and isolated chloroplasts.

    Hans W. Heldt;Chong Ja Chon;Dorothea Maronde;Alice Herold

  • CRITERIA OF INTACTNESS AND THE PHOTOSYNTHETIC ACTIVITY OF SPINACH CHLOROPLAST PREPARATIONS

    R. McC. Lilley;M. P. Fitzgerald;K. G. Rienits;D. A. Walker

  • Concerning a Dual Function of Coupled Cyclic Electron Transport in Leaves

    Ulrich Heber;David Walker

  • AN IMPROVED CATHODE FOR THE MEASUREMENT OF PHOTOSYNTHETIC OXYGEN EVOLUTION BY ISOLATED CHLOROPLASTS

    Unknown

  • An improved spectrophotometric assay for ribulosebisphosphate carboxylase

    R.McC. Lilley;D.A. Walker

  • POLAROGRAPHIC MEASUREMENT OF PHOTOSYNTHETIC OXYGEN EVOLUTION BY LEAF DISCS

    Unknown

  • Chlorophyll Fluorescence as a Measure of Photosynthetic Carbon Assimilation

    George G. R. Seaton;David Alan Walker

  • Biofuels, facts, fantasy, and feasibility

    David Alan Walker

  • Photosynthesis by Isolated Protoplasts, Protoplast Extracts, and Chloroplasts of Wheat: Influence of Orthophosphate, Pyrophosphate, and Adenylates

    Gerald E. Edwards;Simon P. Robinson;Nicholas J. C. Tyler;David A. Walker

  • PHOTOSYNTHESIS IN VIVO CAN BE LIMITED BY PHOSPHATE SUPPLY

    Mirta N. Sivak;David A. Walker

  • The isolation of spinach chloroplasts in pyrophosphate media.

    W. Cockburn;D. A. Walker;C. W. Baldry

  • Photosynthesis and phosphate: a cellular affair?

    David Alan Walker;Mirta Noemí Sivak

  • Simultaneous measurement of oxygen evolution and chlorophyll fluorescence from leaf pieces.

    Thomas J. Delieu;David A. Walker

  • Simultaneous Measurement of Oscillations in Oxygen Evolution and Chlorophyll a Fluorescence in Leaf Pieces

    David A. Walker;Mirta N. Sivak;Roslyn T. Prinsley;John K. Cheesbrough

  • Secondary fluorescence kinetics of spinach leaves in relation to the onset of photosynthetic carbon assimilation.

    Walker Da

  • PHOTOSYNTHETIC INDUCTION PHENOMENA AND THE LIGHT ACTIVATION OF RIBULOSE DIPHOSPHATE CARBOXYLASE

    Unknown

  • Photosynthesis by isolated chloroplasts. Inhibition by DL-glyceraldehyde of carbon dioxide assimilation.

    D. M. Stokes;D. A. Walker

  • Some effects of inorganic phosphate on O2 evolution by isolated chloroplasts.

    W. Cockburn;C.W. Baldry;D.A. Walker

  • Carbon Dioxide Assimilation by Leaves, Isolated Chloroplasts, and Ribulose Bisphosphate Carboxylase from Spinach

    Ross McC. Lilley;David A. Walker

  • STIMULATION OF PHOTOSYNTHETIC STARCH FORMATION BY SEQUESTRATION OF CYTOPLASMIC ORTHOPHOSPHATE

    Chen-She Sheu-Hwa;D. H. Lewis;D. A. Walker

  • The reduction of 3-phosphoglycerate by reconstituted chloroplasts and by chloroplast extracts.

    R.McC. Lilley;D.A. Walker

  • Chlorophyll a fluorescence: can it shed light on fundamental questions in photosynthetic carbon dioxide fixation?

    Mirta N. Sivak;David A. Walker

  • Light-dependent reduction of dehydroascorbate and uptake of exogenous ascorbate by spinach chloroplasts.

    J. W. Anderson;Christine H. Foyer;D. A. Walker

  • Photosynthesis by isolated chloroplasts. Reversal of orthophosphate inhibition by Calvin-cycle intermediates

    W. Cockburn;D. A. Walker;C. W. Baldry

  • Automated Measurement of Leaf Photosynthetic O $_2$ Evolution as a Function of Photon Flux Density [and Discussion]

    David Alan Walker

  • Correlation between Photosynthetic Activity and Membrane Integrity in Isolated Pea Chloroplasts

    D. A. Walker

Frequent Co-Authors

Christine H. Foyer
Christine H. Foyer University of Birmingham
Richard C. Leegood
Richard C. Leegood University of Sheffield
Simon P. Robinson
Simon P. Robinson Commonwealth Scientific and Industrial Research Organisation
Robert T. Furbank
Robert T. Furbank Australian National University
Ulrich Heber
Ulrich Heber University of Würzburg
Ian E. Woodrow
Ian E. Woodrow University of Melbourne
Denis J. Murphy
Denis J. Murphy University of South Wales
Gerald E. Edwards
Gerald E. Edwards Washington State University
Agu Laisk
Agu Laisk University of Tartu
Werner M. Kaiser
Werner M. Kaiser University of Würzburg

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